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18 Nov 2019
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Get SiO2 17. A595-g sample of AgNO3 is reacted with excess Bacl2 according to the equation to give 4.48 g of AgCl. What is the percent yield of AgCI? a. 59.5% b. 44.6% c. 89.2% d. 75.3 e. 100 18 Pure copper may be produced by the reaction of copper() sulfide with oxygen gas as follows: the reaction of0.700 kg of copper(nsulfide with excess oxygen produces 0.190 kg of copper metal, what is the percent yield? a. 67.9 b. 39.9 c, 27.1 d. 135 e. 33.9 19. A mass of 3.462 g of a metal carbonate, Mco3, is heated to drive off carbon dioxide. The remaining metal oxide has a mass of 2.229 g. MCO30s DMO(s) CO2(g) What is the identity ofthe metal? a. Mg b. Ca. c. Cu d. Sr e. Ba 20 What volume of 0.921 M Nazco3 solution contains 74.0 g ofNa2CO3? a. 0.642 L b. 8.52 x 103 L c. 0.757 L d. 7.22 x 103 L e. 1.31 L. 21. How many moles of sulfate ions are there in a 0.547-L solution of 0.715 M Al20SO4 3? a. 0.391 mol b. 1.17 mol c. 2.29 mol d. 0.13 mol e, 3.92 mol 22. A dilute solution is prepared by transferring 40.00 mL of a 0.3433 M stock solution to a 750.0 mL a volumetric flask and diluting to mark. What is the molarity of this dilute solution? a. 0.01838876 M b. 0.03661 M c. 0.06436 M d. 0.004577 M e. 0.1716 M What is the pH of 2.9x 10-3 M HCI(aq)? a -1.01 b. 2.54 c. 3.500 d. 1.01 e, 5.65 24 which of the following reactions best describes the dissolution of solid NaoH(s in water? a. NaoH() H200) ONao (ag)+H30 (ag) NaoH(s) Nao (ang) H (ag) NaOH(s)DNao (ag) H (ag) NaOH(s)ONa (aq) OH (ag) 25 when solutions of barium i and sodium sulfate are mixed, the spectatorions in the resulting precipitation reaction are a. both Na and r. only SO4 c. only r. only
I need help please
Get SiO2 17. A595-g sample of AgNO3 is reacted with excess Bacl2 according to the equation to give 4.48 g of AgCl. What is the percent yield of AgCI? a. 59.5% b. 44.6% c. 89.2% d. 75.3 e. 100 18 Pure copper may be produced by the reaction of copper() sulfide with oxygen gas as follows: the reaction of0.700 kg of copper(nsulfide with excess oxygen produces 0.190 kg of copper metal, what is the percent yield? a. 67.9 b. 39.9 c, 27.1 d. 135 e. 33.9 19. A mass of 3.462 g of a metal carbonate, Mco3, is heated to drive off carbon dioxide. The remaining metal oxide has a mass of 2.229 g. MCO30s DMO(s) CO2(g) What is the identity ofthe metal? a. Mg b. Ca. c. Cu d. Sr e. Ba 20 What volume of 0.921 M Nazco3 solution contains 74.0 g ofNa2CO3? a. 0.642 L b. 8.52 x 103 L c. 0.757 L d. 7.22 x 103 L e. 1.31 L. 21. How many moles of sulfate ions are there in a 0.547-L solution of 0.715 M Al20SO4 3? a. 0.391 mol b. 1.17 mol c. 2.29 mol d. 0.13 mol e, 3.92 mol 22. A dilute solution is prepared by transferring 40.00 mL of a 0.3433 M stock solution to a 750.0 mL a volumetric flask and diluting to mark. What is the molarity of this dilute solution? a. 0.01838876 M b. 0.03661 M c. 0.06436 M d. 0.004577 M e. 0.1716 M What is the pH of 2.9x 10-3 M HCI(aq)? a -1.01 b. 2.54 c. 3.500 d. 1.01 e, 5.65 24 which of the following reactions best describes the dissolution of solid NaoH(s in water? a. NaoH() H200) ONao (ag)+H30 (ag) NaoH(s) Nao (ang) H (ag) NaOH(s)DNao (ag) H (ag) NaOH(s)ONa (aq) OH (ag) 25 when solutions of barium i and sodium sulfate are mixed, the spectatorions in the resulting precipitation reaction are a. both Na and r. only SO4 c. only r. only
Jean KeelingLv2
18 Nov 2019